Download CI-3K51101 Integra Ci3 User Manual

Installation and Operating Instructions
Integra Ci3
Crompton Instruments
The following symbols appear in this user guide, and may also be affixed to the products discussed
in this guide:
Symbol
Description
Earth terminal
Caution, Risk of electric shock
Caution, Refer to accompanying text
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CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
Crompton Instruments
Contents
1
Introduction
5
1.1
Unit Characteristics .................................................................. 5
1.2
Current Transformer Primary Current ...................................... 5
1.3
RS485 Serial Option Modbus™ or JC N2Protocol................... 6
1.4
Pulse Output Option................................................................. 6
2
Start Up Screens
7
3
Measurement Mode
8
3.1
4
Display Mode Screen Sequence.............................................. 9
Setting-Up
10
4.1
4.1.1
4.1.2
Setup Entry Methods ............................................................. 10
Menu Option Selection..................................................... 10
Number Entry Procedure ................................................. 10
4.2
Setup Menu Structure ............................................................ 12
4.3
Change Password.................................................................. 13
4.4
Supply System ....................................................................... 13
4.5
CT .......................................................................................... 14
4.6
Demand Integration Time ...................................................... 15
4.7
Reset...................................................................................... 16
4.8
Communications .................................................................... 17
4.9
Relay Pulse Output ................................................................ 22
4.10
Energy Units .......................................................................... 26
4.11
Test ........................................................................................ 27
4.12
Version Information ................................................................ 29
5
Specification
30
5.1
5.1.1
Measurement Inputs .............................................................. 30
Range of Use ................................................................... 30
5.2
Accuracy ................................................................................ 30
5.3
Auxiliary Supply ..................................................................... 31
5.4
5.4.1
5.4.2
Option Modules...................................................................... 31
Pulse Relay Outputs ........................................................ 31
RS485 Output for Modbus™ or JC N2 Protocol .............. 31
5.5
Reference Conditions of Influence Quantities........................ 32
5.6
Environment........................................................................... 32
5.7
Mechanics.............................................................................. 32
5.8
Approval, Certification, and Standards Compliance............... 32
6
Maintenance
33
7
Installation
33
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Crompton Instruments
7.1
Safety .....................................................................................33
7.2
EMC Installation Requirements..............................................33
7.3
Case Dimensions and Panel Cut-Out ....................................34
7.4
Wiring .....................................................................................35
7.5
Additional considerations for three wire systems ...................35
7.6
Auxiliary Supply......................................................................35
7.7
Fusing.....................................................................................35
7.8
Earth/Ground Connections.....................................................36
7.9
Connection Diagrams.............................................................36
7.10
RS485 and Modbus™ or JC N2 Protocol...............................36
7.11
Operation Check ....................................................................37
8
4
Basis of measurement and calculations
37
8.1
Phase to Phase voltages........................................................37
8.2
Reactive and Apparent Power................................................37
8.3
Energy resolution ...................................................................37
8.4
Power Factor ..........................................................................37
8.5
Maximum Demand .................................................................38
8.6
Total Harmonic Distortion.......................................................38
9
Glossary
39
10
Index
40
CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
Crompton Instruments
1.Introduction
1 Introduction
This document provides operating, maintenance and installation instructions for the Crompton
Instruments Integra Ci3 digital meter. The unit measures and displays all major electrical and
power quality parameters, including imported real and reactive energy, since it was last reset, in
terms of Wh, kWh, MWh, VArh, kVArh and MVArh for single phase, three-phase 3-wire or threephase 4-wire supplies. In order to measure these parameters, the unit requires voltage and
current inputs in addition to the supply required to power the unit. The current input(s) are
obtained via current transformers (CTs).
The unit can be configured to work with a wide range of CTs, giving the unit a wide range of
operation. Option modules can be fitted to provide pulse and RS485 Modbus™/JC N2 outputs.
Configuration is password-protected.
The unit can be powered from a separate auxiliary a.c. (or d.c.). Alternatively it can be powered
from the monitored supply, where appropriate.
1.1 Unit Characteristics
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Individual Line-to-Neutral (4-wire and 2-wire only) and Line-to-Line voltages
Line frequency
Individual line voltage % THD
Individual line currents
Neutral current (calculated)
Individual line current maximum demand
Individual line current % THD
Active Power
Reactive Power
Apparent Power
Maximum Active Power Demand
Power Factor
Active Energy (Wh, kWh or MWh)
Reactive Energy (VArh, kVArh or MVArh)
The unit has password-protected set-up screens for:
• Changing password
• System type selection
• CT primary current (1 to 9999A)
• Demand interval time
• Energy reading reset
• Pulse output duration and rate divisor (option)
• RS485 serial Modbus™ or JC N2 format (option)
Pulsed relay outputs, indicating energy, and an RS485 output are available as optional extras. The
RS485 output option allows remote monitoring from another display or a computer.
1.2 Current Transformer Primary Current
The unit can be configured to operate with CT primary current of between 1 and 9999A. Maximum
CT primary current corresponds to a maximum input current to the unit of 5A.
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1.Introduction
Crompton Instruments
1.3 RS485 Serial Option Modbus™ or JC N2Protocol
This option uses an RS485 serial port with Modbus™ or Johnson Controls (JC) N2 protocol to
provide a means of remotely monitoring the Ci3 unit. Both protocols are supported in the same
unit. Full instructions for RS485 port can be found in Section 4.8.
1.4 Pulse Output Option
This option provides one or two relay pulse outputs that clock up measured active (Wh) or reactive
(VArh) energy. The unit can produce one pulse for preset quantity of energy imported. Pulse rate
divisor and width are configured from the Set-up menu, as detailed in Section 4.9.
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Crompton Instruments
2.Start Up Screens
2 Start Up Screens
The first screen lights all LED segments and can be used as a
display LED check.
The second screen indicates the hardware and firmware revision of
the unit. This example shows a hardware revision of 1·030 and a
firmware version number of 32·76.
Next the unit performs a self-test and the screen indicates if the test
is passed.
After a short delay, the default measurement screen appears.
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3.Measurement Mode
Crompton Instruments
3 Measurement Mode
In measurement mode, the buttons control the displayed measurement as follows:
Pressing this button cycles the display through the available
Voltage and Frequency parameter screens. The specific
parameters displayed are determined by the selected
System Type (Three-Phase Three-Wire, Three-Phase FourWire, or Single-Phase Two Wire), see Section 3.1.
Pressing this button cycles the display though the available
Current parameter screens. Specific parameters displayed
are determined by the selected System Type.
This key is used to select and cycle through the System
Power and Power Factor parameter screens.
Cycles between Active import and Reactive import energy
screens. The number displayed is split over two lines. In
this example the active energy displayed is 0000092·5 kWh.
The
and/or
symbol on the top line flashes each
time an output pulse is generated.
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3.Measurement Mode
3.1 Display Mode Screen Sequence
3 Phase 4 Wire
Screen
Screen
3 Phase 3 Wire
Screen
Volts L1 – N
1
Volts L2 – N
Parameters
1 Phase 2 Wire
Screen
Volts L1 -L2
1
Volts L3 – N
Volts L2 - L3
Parameters
Volts L1
1
Volts L3 - L1
-
Volts L1 -L2
2
Volts L2 - L3
Volts L3 - L1
3
Frequency
2
Frequency
2
Frequency
Volts L1 - N THD%
4
Volts L2 - N THD%
Volts L3 - N THD%
Volts L1 -L2 THD%
5
1
Volts L2 - L3 THD%
Volts L1 -L2 THD%
3
-
Current L1
Current L1
Current L1
Current L2
1
L2 Current Max Demand
2
Current L2 THD%
3
Current L3 THD%
-
Current L3
-
L1 Current Max Demand
L1 Current Max Demand
L2 Current Max Demand
2
-
L3 Current Max Demand
-
Current L1 THD%
Current L1 THD%
kVAr
Current L2 THD%
3
Current L3 THD%
kW
1
1
Neutral Current Max Demand
Current L1 THD%
5
Current L2
Neutral Current
L3 Current Max Demand
4
-
Volts L3 - L1 THD%
L1 Current Max Demand
3
3
Volts L3 - L1 THD%
Current L3
2
Volts L2 - L3 THD%
Volts L1 THD%
-
kW
1
kVA
kVAr
kW
1
kVA
kVAr
kVA
2
kW Max Demand
2
kW Max Demand
2
kW Max Demand
3
Power Factor
3
Power Factor
3
Power Factor
1
kWh
1
kWh
1
kWh
2
kVArh
2
kVArh
2
kVArh
The top line of the screen displays
pulse is generated. Additionally, a
and/or
symbols, which flash each time an output
symbol will flash to show RS485 activity.
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4.Setting-Up
Crompton Instruments
4 Setting-Up
Setting up of the Integra Ci3 digital meter may be carried out by using either the local display or the
Integra Ci3 digital meter Configurator software. The Integra Configurator software has its own online guide, which can be downloaded from www.crompton-instruments.com. Additionally, if
required, setting up parameters may be manipulated directly via the RS485 communications
interface. The following sections give step-by-step procedures for configuring the Integra Ci3
digital meter using the front panel.
To enter set-up mode, firmly press the
and
buttons
simultaneously and hold for approximately 5 seconds, until the
password screen appears. Setting-up is password-protected so
you must enter the correct password (default ‘0000’) before
proceeding. If an incorrect password is entered, the display reverts
to measurement mode.
To exit setting-up mode, press
and
repeatedly until the measurement screen is restored or hold
buttons simultaneously for 5 seconds.
4.1 Setup Entry Methods
Some menu items, such as password and CT, require a four-digit number entry while others, such
as supply system, require selection from a number of options.
4.1.1 Menu Option Selection
1. Use the
(up) and
(down) keys to select the required item from the menu shown in
Section 4.2. Selection does not roll over from bottom to top of list or vice versa.
2. Press
(enter) key to confirm your selection.
and
3. If an item flashes (shown red on these pages), then it can be adjusted by the
keys. If not, there may be a further layer, e.g. Comms - Baud rate, before adjustment is
possible. Press
to select the lower layer.
4. Having selected an option from the current layer, press
to confirm your selection. The
bottom row will indicate SET to confirm the value has been set to the desired value.
5. Having completed a parameter setting, press
(back) to return to a higher menu level. The
SET indicator will extinguish and you can then use the
selection.
6. On completion of all setting-up, repeatedly press
and
keys for further menu
to return to the measurement screen.
4.1.2 Number Entry Procedure
When setting-up the unit, some screens require the entering of a number. In particular, on entry to
the setting-up section, a password must be entered. Digits are set individually, from left to right.
The procedure is as follows:
1. The current digit to be set flashes (shown red on these pages) and is set using the
and
10
keys.
CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
Crompton Instruments
4.Setting-Up
2. Press
to confirm each digit setting. The SET indicator comes on to confirm successful
entry after the last digit has been set.
3. To step back a digit, to correct a mistake, press the
4. After setting the last digit, press
extinguish.
key.
to exit the number setting routine. The SET indicator will
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4.Setting-Up
Crompton Instruments
4.2 Setup Menu Structure
Main Screen
Password Entry
First Level
Second Level
Third Level
CHNG PASS (Change Password)
NPWd (New password)
Enter password value between:
0000-9999
SYS (System Configuration)
Select from:
1P2W
3P3W
3P4W
CT (Primary CT)
Enter Primary CT Value
0001-9999 Amps
dIT (Demand Interval Time)
Select from:
60 minutes
30 minutes
20 minutes
15 minutes
10 minutes
8 minutes
5 minutes
OFF
RSET (Reset)
Select from:
ALL (Reset all counters)
hour (Reset kWhr & kVAhr counters)
dMd (Reset demand counters)
COMS (Communications)
PROT (Protocol)
Select from:
Modb (Modbus)
N2 (Johnson Controls)
bAUd (Baud rate)
Select from:
2400
4800
9600
19200
38400
PARI (Parity)
Select from:
None
Odd
Even
STOP (Stop bits)
Select from:
1
2
Addr (Address)
Enter Address value between:
1-247
Ordr (Floating point number byte order)
Displays either:
Norm (Normal)
Rev (Reverse)
OP1 (Assign Relay Ouput 1)
Select from:
NONE
KWh (kWhr output)
KVAr (kVAhr output)
OP2 (Assign Relay Ouput 2)
Select from:
NONE
KWh (kWhr output)
KVAr (kVAhr output)
RATE (Pulse rate)
Select from:
0.1
1
10
100
1000
PULS (Pulse Width)
Select from:
60mS
100mS
200mS
RLY (Relay)
12
NRGY (Energy)
Select between:
KILO
MEGA
TEST
Select between:
dISP ON (Tests all display LCD Segments)
dISP TOGL (Toggle LCD display test)
PHAS SEQ (Tests wiring connections)
SOFT
Displays software version number.
CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
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4.Setting-Up
4.3 Change Password
1.
Use
2.
Press
to enter the change password routine. The New
Password screen will appear with the first digit flashing.
3.
Use
and
to set the first digit and press
selection. The next digit will flash.
4.
Repeat the procedure for the remaining three digits.
5.
At any point during the number entry procedure, press
to step
back a digit or, by repeated pressing, step back out of the Change
Password screen without saving your changes.
6.
After setting the last digit, the SET indicator will light.
7.
Press
to exit the number setting routine and return to the SetUp menu. The SET indicator will extinguish.
and
to choose the Change Password option.
to confirm your
4.4 Supply System
Use this section to set the system type of the supply being monitored.
1.
and
keys to select the
From the Set-up menu, use the
System option. The screen will show the currently selected system
type.
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4.Setting-Up
2.
Press
Use the
Crompton Instruments
to enter the Supply Selection routine.
and
keys to select the required system type:
3.
3-phase 4-wire
3-phase 3-wire
single phase
4.
Press
5.
Press
to exit the system selection routine and return to the
menu. The SET indicator will extinguish and you will be returned to
the main Set-up menu.
to confirm your selection. SET indicator will appear.
4.5 CT
The CT option sets the maximum primary current of the current transformer (CT) that will give 5A
into the meter (the maximum).
1.
14
and
keys to select the CT
From the Set-up menu, use the
option. The screen will show the current CT primary current value.
An ‘A’ to the right indicates that the reading is in Amperes.
CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
Crompton Instruments
4.Setting-Up
2.
Press
3.
Use the method described in Section 4.1.2 to set the 4-digit number to the maximum CT
primary current, e.g. 500A.
4.
On completion of the entry procedure, press
main Set-up menu.
to enter the CT routine. The first digit will flash.
to return to the
4.6 Demand Integration Time
The Demand Integration Time (dIT) option sets the period over which the current and power
readings are integrated for maximum demand measurement.
1.
From the Set-up menu, use the
and
keys to select the dIT
option. The screen will show the current demand integration time,
in minutes.
2.
Press
Use the
3.
to enter the demand integration time routine.
and
keys to select the required integration time:
60
30
20
15
10
8
5
OFF
60 minutes
30 minutes
20 minutes
15 minutes
10 minutes
8 minutes
5 minutes
No demand integration time
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4.Setting-Up
Crompton Instruments
4.
Press
to confirm your selection. SET indicator will appear.
5.
Press
to return to the main Set-up menu.
4.7 Reset
Use this option to reset Demand (dMd) and Energy (kWh, kVArh) measurements, either
individually or all together, to zero.
1.
From the main Setup menu, use the
the Reset option.
2.
Press
flash.
Using the
and
keys to select
to enter the Reset sub-menu. The dMd segment will
and
keys, select which parameter you wish to reset:
3.
Demand counters
16
kWh and kVArh counters
All counters
CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
Crompton Instruments
4.Setting-Up
4.
Press
to reset the selected parameter. RSET will be
displayed and the chosen parameter will stop flashing.
5.
Press
to exit the Reset routine. RSET will extinguish and
you will be returned to the main Set-up menu.
4.8 Communications
The RS485 port can be used for communications using either Modbus™ or Johnson Controls (JC)
N2 protocol. For Modbus™, parameters such as Baud rate are selected from the front panel
whereas for JC N2 they are fixed. The RS485 address can be selected for both protocols.
The first section allows you to select either Modbus™ or JC N2 configuration.
1.
From the main Setup menu, use the
display the Communications screen.
2.
Press
. The Format screen will appear showing the current
format – ModB or N2.
3.
To change the format, press
and
keys to
. The format will flash.
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4.Setting-Up
Crompton Instruments
4.
Use the
5.
Press
6.
Press
to exit the format selection routine. The SET
indicator will extinguish.
and
key to change the format.
to confirm your selection. SET will be displayed.
If you have selected N2 format, you can use the
option and set it as detailed on page 21.
and
keys to select the RS485 address
If you have selected Modb format, set the serial parameters as follows:
7.
Use the
and
keys to cycle through the Baud, parity,
stop bits and address menu options.
Baud Rate (not applicable for JC N2)
To change the Baud setting, ensure that the display shows the
8.
18
to enter the Baud setting routine.
Baud setting and press
The setting digits will flash.
CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
Crompton Instruments
4.Setting-Up
9.
and
keys to select the desired Baud rate
Use the
from the available options 9600, 4800, 2400, 38·4k (38400)
and 19·2k (19200).
10.
Press
to confirm your Baud rate selection. SET will be
displayed.
Press
11.
to exit Baud setting routine. The SET indicator will
and
keys can be used to select a
extinguish and the
different communications parameter.
Parity (not applicable for JC N2)
Note that if parity is set to Odd or Even, Stop Bits will be set to 1 and cannot be changed.
12.
Use the
13.
Press
to enter the parity setting routine. The parameter
will flash.
and
keys to select the Parity option.
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19
4.Setting-Up
Crompton Instruments
14.
Use the
and
keys to select the desired parity option
from None, Even and Odd.
15.
Press
to confirm your selection. SET will be displayed.
Press
to exit parity setting routine. The SET indicator will
16.
and
keys can be used to select a
extinguish and the
different communications parameter.
Stop Bits(not applicable for JC N2)
Note that, if Parity is set to Odd or Even, Stop Bits will be set to 1 and cannot be changed.
17.
Use the
18.
Press
to enter the Stop Bits setting routine. The
parameter value will flash.
20
and
keys to select the Stop Bits option.
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Crompton Instruments
4.Setting-Up
19.
Use the
20.
Press
to confirm your selection. SET will be displayed.
Press
to exit Stop Bits setting routine. The SET indicator
21.
and
keys to select either 1 or 2 stop bits.
and
keys can be used to
will extinguish and the
select a different communications parameter.
RS485 Address
An RS485 network can accommodate up to 255 different devices, each identified by an address
between 1 and 247 (Modbus™) or 1 and 255 (JC N2).
22.
Use the
23.
Press
to enter the Address setting routine. The first digit
will flash.
24.
Use the method described in Section 4.1.2 to set the 3-digit
address to the required number between 1 and 247 for
Modbus™ or 1 and 255 for JC N2.
and
keys to select the Address option.
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4.Setting-Up
Crompton Instruments
Modbus™ Word Order (not applicable for JC N2)
This screen shows the word order (Hi/Lo) of the 8-bit bytes in the
Modbus™ message format. Normal is Hi first. This screen is for
information purposes only, as this setting cannot be changed from the
front panel. (Not applicable for JC N2 format.)
Press
to exit the Communications set-up screens and return to the main Set-up menu.
4.9 Relay Pulse Output
This option allows you to configure one or two optional pulse outputs from the unit. Each output
can be set to provide a pulse for a defined amount of energy imported. The energy monitored can
be active or reactive and the pulse width can be select as 200, 100 or 60 ms. The defined energy
per pulse will be the same for both outputs.
Maximum output pulse rate is two pulses per second, and the system prohibits setting of an
energy-per-pulse that will give a pulse rate greater than this. For example, on a single-phase, twowire system, a CT setting of 900A with a maximum 289V supply with 120% overload on both
current and voltage implies a maximum energy imported in an hour of (900 × 120%) × (289 ×
120%) = 375 kWh which is 104 W.seconds. A setting of 10Wh per pulse would generate 10 pulses
per second. Since this exceeds 2/s, the unit would not allow such a setting.
Use this section to set up the relay pulse output(s) –
Output 1 off, import kWh, import kVArh
Output 2 off, import kWh, import kVArh
Rate (for both) 0.001/0.01/0.01/0.1/1/10/100/1000/10,000 kilo/pulse
Pulse width (for both) 200/100/60 ms.
1.
From the main Setup menu, use the
the Relay screen.
2.
Press
From here, the
Pulse Width.
22
and
keys to display
. The Output 1 screen will appear.
and
keys can be used to select menus for Output 1, Output 2, Rate and
CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
Crompton Instruments
4.Setting-Up
Output 1
3.
Use the
4.
Press
to enter the Output 1 setting routine. The screen will
show the current setting for Output 1 flashing.
5.
Use the
and
keys to select the required option for Output
1: None, kVAr, or kWh.
6.
Press
to confirm your selection. The SET indicator will appear.
Press
to exit Output 1 setting routine. The SET indicator will
and
keys to select the Output 1 screen.
7.
extinguish and the
and
different Relay parameter.
keys can now be used to select a
Output 2
This is the next item on the Relay menu and the method of setting is
exactly the same as for Output 1.
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4.Setting-Up
Crompton Instruments
Rate
Use this to set the energy represented by each pulse from either output.
8.
Use the
9.
Press
to enter the Rate setting routine. The Rate value will
flash. The Rate is the energy that each output pulse represents.
10. Use the
output(s).
and
and
keys to select the Rate screen.
keys to select the Rate required for the pulse
to confirm your selection. The SET indicator will appear
11. Press
and the display will stop flashing.
Press
to exit Rate setting routine. The SET indicator will
12.
and
extinguish and the
different Relay parameter.
24
keys can be used to select a
CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
Crompton Instruments
4.Setting-Up
Pulse Duration
Use this option to set the duration of pulses (in ms) from both outputs.
13. Use the
Press
14. flash.
and
keys to select the Pulse screen.
to enter the Pulse Width setting routine. The value will
15. Use the
and
keys to select the Pulse Width in ms.
Press
to confirm your selection. The SET indicator will appear
16. and the display will stop flashing.
Press
to exit Pulse Width setting routine. The SET indicator
17. will extinguish and the
and
different Relay parameter.
Press
keys can be used to select a
to exit the Relay set-up screens and return to the main Set-up menu.
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4.Setting-Up
Crompton Instruments
4.10 Energy Units
Use this option to set the displayed units multiplier.
The unit multiplier for all displays can be set to kWh/kVArh (kilo) or MWh/MVArh (Mega).
1.
and
keys to select the Energy screen. The
Use the
screen will show the energy unit in use.
2.
Press
to enter the Energy unit selection routine. The current
selected unit flashes.
3.
Use the
4.
Press
to confirm your selection. The SET indicator will
appear and the display will stop flashing.
5.
Press
to exit Unit setting routine. The SET indicator will
extinguish.
26
and
keys to select the desired unit.
CI-3K51101 Integra Ci3 User Manual Rev 11, Sep 2011
Crompton Instruments
4.11
4.Setting-Up
Test
This option provides various test facilities.
1.
Use the
2.
Press
3.
Use the
and
keys to select the required test option and press
your selection. The available options are:
and
keys to select the Test screen.
to enter the Test menu.
to confirm
Lights all LCD segments so that display
segments can be checked.
Toggles display segments alternately.
Shows the voltage and current phase
sequences.
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4.Setting-Up
Crompton Instruments
4.
Press
to exit the selected test display mode.
5.
Press
again to return to the main Setup menu.
The voltage and current inputs must be greater than 5% of nominal for the test to operate reliably.
Voltage and current phase displays show the phase relationships of the inputs. To obtain the
correct power readings, the phase sequences can be either ‘123’ or ‘132’ but must be the same for
both current and voltage.
To obtain phase indications, the measured phase relationships must be within the following
parameters. If, for instance, a current transformer were to be reverse connected, the phase of the
measured current for that phase would be out be 180° out and the display would indicate a current
phase error.
Three-phase four-wire mode
Measurements are referenced from L1.
Voltage:
For the voltage sequence test, the phase of L2 relative to L1 must be within the window
240° ± 48° and L3 relative to L1 must be within the window 120° ± 48° to record the sequence
V123.
Alternatively, the phase of L2 relative to L1 must be within the window 120° ± 48° and L3
relative to L1 must be within the window 240° ± 48° to record the sequence V132.
The display shows ‘V1--‘ if a voltage phase is outside these parameters.
Current:
For the current sequence test, the phase of I1 relative to L1 must be within the window
0° ± 48°, I2 relative to L1 must be within the window 240° ±°48°, and I3 relative to L1 must be
within the window 120° ± 48° to record the sequence i123.
Alternatively the phase of I1 relative to L1 must be within the window 0° ± 48°, I2 relative to L1
must be within the window 120° ± 48°, and I3 relative to L1 must be within the window
240° ± 48° to record the sequence i132.
The display shows ‘I --‘ if a current phase is outside these parameters.
Three-phase three-wire mode
Measurements are referenced from L1-L2.
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Crompton Instruments
4.Setting-Up
Voltage:
For the voltage sequence test, the phase of L2-L3 relative to L1-L2 must be within the window
240° ± 48° and L3-L1 relative to L1-L2 must be within the window 120° ± 48° to record the
sequence V123.
Alternatively, the phase of L2-L3 relative to L1-L2 must be within the window 120° ± 48° and L3
relative to L1-L2 must be within the window 240° ± 48° to record the sequence V132.
The display shows ‘V1--‘ if a voltage phase is outside these parameters.
Current:
For the current sequence test, the phase of I1 relative to L1-L2 must be within the window
330° ± 48°, I2 relative to L1-L2 must be within the window 210° ± 48°, and I3 relative to L1-L2
must be within the window 90° ± 48° to record the sequence i123.
Alternatively, the phase of I1 relative to L1-L2 must be within the window 330° ± 48°, I2 relative
to L1-L2 must be within the window 90° ± 48°, and I3 relative to L1-L2 must be within the
window 210° ± 48° to record the sequence i132.
The display shows ‘I --‘ if a current phase is outside these parameters.
4.12 Version Information
The screen of the Set-up menu shows the firmware and hardware build version of the unit.
This example shows a hardware version of 1·030
and a firmware version of 32·76.
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Crompton Instruments
5.Specification
5 Specification
5.1 Measurement Inputs
Imported energies are recorded.
3-Phase 4-Wire, 3-Phase 3-Wire and Single-Phase 2-Wire Unbalanced.
Direct measurement of 173 to 500Vac L-L, (100 to 289Vac L-N).
Line frequency measured from L1 voltage or L3 voltage.
Three current inputs (six physical terminals) for connection of external CTs.
5.1.1 Range of Use
Values of measured quantities, components of measured quantities, and quantities which affect
measurement errors to some degree, for which the product gives meaningful readings.
Voltage
5 … 120% of Range Maximum (below 5% of Range Maximum voltage,
current indication may only be approximate)
Current
1 … 120% of nominal
Active power
1 … 144% of nominal, 360MW maximum
Apparent power
1 … 144% of nominal, 360MVA maximum
Power is only registered when voltage and current are within their respective range of use.
5.2 Accuracy
Voltage (V)
0·5% of range maximum
Current (A)
0·5% of range maximum (4% for I2 in three wire mode)
Neutral Current calculated (A)
4% of range maximum
Frequency (Hz)
0·11Hz
Power factor (PF)
1% of unity
Active power (W)
±1% of range maximum
Reactive power (VAr)
±1% of range maximum
Apparent power (VA)
±1% of range maximum
Active energy (Wh)
Class 1 IEC 62053-21 Section 4.6
Reactive energy (VARh)
±1% of range maximum
THD
1% up to 31st harmonic
Response time to step input
1 second typical to >99% of final value
Temperature co-efficient
Active energy = 0·018%/°C, typical
Error change due to variation
of an influence quantity in the 2 × error allowed for the reference condition applied in the
manner described in Section 6 test. Error due to temperature variation as above.
of IEC 688:1992
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Crompton Instruments
Error in measurement when a
measurand is within its
measuring range, but outside
its reference range
5.Specification
2 × error allowed at the end of the reference range adjacent
to the section of the measuring range, where the
measurand is currently operating / being tested.
5.3 Auxiliary Supply
The unit can be powered from an auxiliary a.c. or d.c. supply that is separate from the metered
supply. Two-way fixed connector with 2·5mm2 stranded wire capacity.
110 to 400V a.c. 50/60Hz ±10% or 120V to 350V d.c. ±20%. Consumption 5VA nominal.
5.4 Option Modules
Up to two option modules can be fitted which can be of two types: a single RS485 (Modbus™ / JC
N2) or single pulse relay output. A fully populated product can support one RS-485 channel and
one pulse relay output or two pulse relay outputs.
5.4.1 Pulse Relay Outputs
These outputs can be configured from the Set-up menu.
Each of the two possible outputs can be set to generate pulses representing imported kWh or
kVArh.
Rate can be set to generate 1 pulse per
0.001 = 1 Wh/VArh
0.01
= 10 Wh/VArh
0.1
= 100 Wh/VArh
1
= 1 kWh/kVArh
10
= 10 kWh/kVArh
100
= 100 kWh/kVArh
1000 = 1 MWh/MVArh
10000 = 10 MWh/MVArh
The rate cannot be set to a value that could result in more than 2 pulses/second.
Pulse width 200/100/60 ms.
5.4.2 RS485 Output for Modbus™ or JC N2 Protocol
For Modbus™, the following RS485 communication parameters can be configured from the Set-up
menu:
Baud rate 2400, 4800, 9600, 19200, 38400
Parity none/odd/even
Stop bits 1 or 2 (only 1 stop bit can be set if odd or even parity is required)
RS485 network address nnn – 3-digit number 1 to 247
For JC N2, only the RS485 network address can be configured. The range of addresses is 1-255.
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5.Specification
Crompton Instruments
5.5 Reference Conditions of Influence Quantities
Influence Quantities are variables that affect measurement errors to a minor degree. Accuracy is
verified under nominal value (within the specified tolerance) of these conditions.
Ambient temperature
23°C ±1°C
Input waveform
50 or 60Hz ±2%
Input waveform
Sinusoidal (distortion factor < 0·005)
Auxiliary supply voltage
Nominal ±1%
Auxiliary supply frequency
Nominal ±1%
Auxiliary supply waveform (if AC)
Sinusoidal (distortion factor < 0·05)
Magnetic field of external origin
Terrestrial flux
5.6 Environment
Operating temperature
-10°C to +55°C*
Storage temperature
-20°C to +70°C*
*
Maximum operating and storage temperatures are in the context of
typical daily and seasonal variation.
Relative humidity
0 to 90%, non-condensing
Altitude
Up to 2000m
Warm up time
1 minute
Vibration
10Hz to 50Hz, IEC 60068-2-6, 2g
Shock
30g in 3 planes
5.7 Mechanics
Dimensions
96 × 96 mm (L×W)
Depth (behind panel)
53 mm, 77·5mm with option module(s)
Case protrusion (in front of panel)
7 mm maximum
Sealing
IP52 (front panel), IP30 (case) (minimum)
Mounting
DIN 96 panel mounting
5.8 Approval, Certification, and Standards Compliance
RoHS compliant. (Although this class of product is presently excluded from the RoHS regulations,
the unit has been designed and manufactured in compliance with the RoHS regulations.)
EMC Emissions
BS EN 61326, Class A (Industrial)
EMC Immunity
BS EN 61326, Class A (Industrial)
Safety
BS EN 61010-1:2001
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6.Maintenance
6 Maintenance
In normal use, little maintenance is needed. As appropriate for service conditions, isolate electrical
power, inspect the unit and remove any dust or other foreign material present. Periodically check
all connections for freedom from corrosion and screw tightness, particularly if vibration is present.
The front of the case should be wiped with a dry cloth only. Use minimal pressure, especially over
the viewing window area. If necessary wipe the rear case with a dry cloth. If a cleaning agent is
necessary, isopropyl alcohol is the only recommended agent and should be used sparingly. Water
should not be used. If the rear case exterior or terminals should be contaminated accidentally with
water, the unit must be thoroughly dried before further service. Should it be suspected that water
might have entered the unit, factory inspection and refurbishment is recommended.
In the unlikely event of a repair being necessary, it is recommended that the unit be returned to the
factory or nearest Crompton Instruments / Tyco Electronics service centre.
7 Installation
The unit may be mounted in a panel of any thickness up to a maximum of 6 mm (0·25in). Leave
enough space behind the instrument to allow for bends in the connection cables. As the front of
panel enclosure conforms to IP52, it is protected from dripping water. The unit is intended for use
in a reasonably stable ambient temperature within the range -10 to +55°C. Do not mount the unit
where there is excessive vibration or in excessive direct sunlight.
7.1 Safety
The unit is designed in accordance with BS EN 61010-1:2001 (IEC 61010-1:2001) – Permanently
connected use, Normal condition. Installation category III, pollution degree 2, basic insulation for
rated voltage. Measurement Category III.
7.2 EMC Installation Requirements
Whilst this unit complies with all relevant EU EMC (electro-magnetic compatibility) regulations, any
additional precautions necessary to provide proper operation of this and adjacent equipment will be
installation dependent and so the following can only be general guidance:
•
Avoid routing wiring to this unit alongside cables and products that are, or could be, a source of
interference.
•
The auxiliary supply to the unit should not be subject to excessive interference. In some cases,
a supply line filter may be required.
•
To protect the product against incorrect operation or permanent damage, surge transients must
be controlled. It is good EMC practice to suppress transients and surges at the source. The
unit has been designed to automatically recover from typical transients; however in extreme
circumstances it may be necessary to temporarily disconnect the auxiliary supply for a period
of greater than 10 seconds to restore correct operation.
•
Screened communication leads are recommended and may be required. These and other
connecting leads may require the fitting of RF suppression components, such as ferrite
absorbers, line filters etc., if RF fields cause problems.
•
It is good practice to install sensitive electronic instruments that are performing critical functions
in EMC enclosures that protect against electrical interference causing a disturbance in function.
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7.Installation
Crompton Instruments
Warning
•
During normal operation, voltages hazardous to life may be present at some of the
terminals of this unit. Installation and servicing should be performed only by qualified,
properly trained personnel abiding by local regulations. Ensure all supplies are deenergised before attempting connection or other procedures.
•
Terminals should not be user accessible after installation and external installation
provisions must be sufficient to prevent hazards under fault conditions.
•
This unit is not intended to function as part of a system providing the sole means of
fault protection - good engineering practice dictates that any critical function be
protected by at least two independent and diverse means.
•
The unit does not have internal fuses therefore external fuses must be used for
protection and safety under fault conditions.
•
Never open-circuit the secondary winding of an energized current transformer.
•
This product should only be operated with CT secondary connections Earthed.
•
If this equipment is used in a manner not specified by the manufacturer, protection
provided by the equipment may be impaired.
•
Auxiliary circuits (communication & relay outputs) are separated from metering inputs
and 110-400V auxiliary circuits by at least basic insulation. Such auxiliary circuit
terminals are only suitable for connection to equipment which has no user accessible
live parts. The insulation for such auxiliary circuits must be rated for the highest
voltage connected to the instrument and suitable for single fault condition. The
connection at the remote end of such auxiliary circuits should not be accessible in
normal use. Depending on application, equipment connected to auxiliary circuits may
vary widely. The choice of connected equipment or combination of equipment should
not diminish the level of user protection specified.
7.3 Case Dimensions and Panel Cut-Out
92.0
92.0
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Cutout Details
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7.4 Wiring
Input connections are made to screw clamp terminals. Choice of cable should meet local
regulations.
The current inputs of these products are designed for connection into systems via current
transformers only.
Instrument transformers used for connection to the meter must be of approved type and compliant
with ANSI/IEEE C57.13 or IEC 60044-1, selected and sized appropriate to the supply network
being monitored.
To minimise measurement errors, the CTs should be grounded as shown in the wiring diagram in
Section 7.9.
CT secondaries must be grounded in accordance with local regulations. It is desirable to make
provision for shorting links to be made across CTs to permit easy replacement of a unit should this
ever be necessary.
All negative current inputs are commoned inside the unit and grounding should be at one point
only.
All connections are made to screw clamp terminals. Terminals are suitable for copper wires only
and will accept one 0·05 – 2·5mm² (30 – 21AWG) stranded or solid core cable. This instrument is
intended for panel mounting. Terminals must be enclosed within the panel. Use wire rated at
600V for main terminals, 60°C minimum temperature. Terminal screws are fully tightened for
shipment and must be undone before wire insertion. Terminal screws should be tightened to
0·5Nm (4·4 lbf in) only.
7.5 Additional considerations for three wire systems
The neutral terminal (terminal N) is indirectly connected to the voltage input terminals (terminals
L1, L2, L3). When connected to a three wire system the neutral terminal will adopt a potential
somewhere between the remaining lines. If external wiring is connected to the neutral terminal it
must be connected to either the neutral line or earth (ground) to avoid the possibility of electric
shock from the neutral terminal.
7.6 Auxiliary Supply
The Integra Ci3 should ideally be powered from a dedicated supply. However, it may be powered
from the signal source providing the source remains within tolerance for the auxiliary supply.
The unit can be powered from an auxiliary a.c. or d.c. supply that is separate from the metered
supply.
110 to 400V a.c. 50/60Hz ±10% or 120V to 350V d.c. ±20%. Consumption 5VA nominal.
7.7 Fusing
This unit must be fitted with external fuses in voltage and auxiliary supply lines. Voltage input lines
must be fused with a fast blow fuse 1A maximum. Auxiliary supply lines must be fused with a slow
blow fuse rated 1A maximum (if product is powered line-to-line, ensure both lines are fused).
Choose fuses of a type and with a breaking capacity appropriate to the supply and in accordance
with local regulations.
A suitable switch or circuit breaker confirming to the relevant parts of IEC 60947-1 and
IEC 60947-3 should be included in the installation. It should be positioned so as to be easy to
operate, in close proximity to the equipment, and clearly identified as the disconnecting device.
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7.Installation
Crompton Instruments
7.8 Earth/Ground Connections
For safety reasons, current transformer secondary connections should be grounded in accordance
with local regulations. Under no circumstances should the product be operated without an Earth
connection.
7.9 Connection Diagrams
3-phase 3-wire
3-phase 4-wire
Single-phase 2-wire
7.10 RS485 and Modbus™ or JC N2 Protocol
An optional RS485 module can be plugged into the rear of the Integra Ci3. RS485 in conjunction
with the Modbus™ or JC N2 protocol allows the unit to be interrogated and provide a response
detailing the readings it has taken. This can be used for remote monitoring by a PC or SCADA
system.
An RS485 and Modbus™ Protocol Guide is available for download from the Crompton Instruments
web site at http://www.crompton-instruments.com/downloads/Ri3_Ci1_Ci3_comms_guide_v1.pdf
Plan view of option modules – fitted
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7.11
Operation Check
After installation, use the test display to check for incorrect wiring of the
voltage and current transformer inputs. The displayed voltage (V) and
current (I) sequences must be the same but can be ‘123’ or ‘132’.
In the event of a voltage phase error, e.g. the same phase connected to
two meter inputs, the display will show ‘V1--‘.
In the event of a current phase error, e.g. a current transformer reverse
connected or connected to the wrong phase, the display will read ‘I --‘.
If the display shows an identical V and I sequence (123 or 132), check that the meter gives the
correct forward and reverse indications. An incorrect forward/reverse indication means that all
current transformer connections are reversed.
The meter has a defined tolerance for displaying phasing errors, see Section 4.11.
8 Basis of measurement and calculations
8.1 Phase to Phase voltages
Phase to Phase voltages are measured directly and calculated as RMS values. Situations where
the phases are not spaced 120 degrees apart (e.g. 4 wire open delta) are indicated correctly.
8.2 Reactive and Apparent Power
Active powers are calculated directly by multiplication of voltage and current samples. Reactive
powers are calculated using the frequency corrected quarter phase time delay method. Apparent
power is calculated as the square root of the sum of the squares of active and reactive powers.
8.3 Energy resolution
Cumulative energy counts are reported using the standard IEEE floating point format. Reported
energy values in excess of one million may show a small non cumulative error in the integer digits
due to the limitations of the number format. Internally the count is maintained with greater
precision. The reporting error is less than 1 part per million and is automatically corrected when
the count increases.
8.4 Power Factor
The magnitude of Per Phase Power Factor is derived from the per phase active power and per
phase reactive power. The power factor value sign is set to negative for an inductive load and
positive for a capacitive load.
The magnitude of the System Power Factor is derived from the sum of the per phase active power
and per phase reactive power. Individual phases whose apparent power is less than 3% of
nominal are not included in power factor determinations. The system power factor value sign is set
to negative for an inductive load and positive for a capacitive load. The load type, capacitive or
inductive, is determined from the signs of the sums of the relevant active powers and reactive
powers. If both signs are the same, then the load is inductive, if the signs are different then the
load is capacitive. The magnitude of the phase angle is the ArcCos of the power factor. Its sign is
taken as the opposite of the VAr's sign.
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8.Basis of measurement and calculations
Crompton Instruments
8.5 Maximum Demand
The maximum power consumption of an installation is provided as power utilities often levy related
charges. Many utilities use a thermal maximum demand indicator (MDI) to measure this peak
power consumption. An MDI averages the power consumed over a number of minutes, reflecting
the thermal load that the demand places on the supply system. The Integra Ci3 digital meter uses
a sliding window algorithm to simulate the characteristics of a thermal MDI instrument, with the
demand period being updated every minute. Demand Integration Times can be set to Off, 5, 8, 15,
20, 30 or 60 minutes. Maximum Demand is the maximum power or current demand that has
occurred since the unit was last reset. This is maintained as a continuous record of the highest
demand value that has been reached. Note: During the initial period when the “sliding window”
does not yet contain a full set of readings (i.e. the elapsed time since the demands were last reset
or the elapsed time since the Integra Ci3 digital meter was switched on is less than the selected
demand integration time) then maximum demands may not be true due to the absence of
immediate historical data.
With the Demand Integration Time set to “Off” the “Maximum Demand” values become “Maximum”
values as no averaging is performed on the measured parameters.
8.6 Total Harmonic Distortion
The calculation used for Total Harmonic Distortion is:
THD = ((RMS of total waveform – RMS of fundamental) / RMS of total waveform) × 100
This is often referred to as THD – R, and lies in the range 0 to 100%. THD measurement is
subject to the 'range of use' limits. The Integra Ci3 digital meter may give erratic or incorrect
readings where the THD is very high and the fundamental is essentially absent. For low signal
levels the noise contributions from the signal may represent a significant portion of the “RMS of
total waveform” and may thus generate unexpectedly high values of THD. To avoid indicating
large figures of THD for low signal levels the product will produce a display of 0 (zero). Typically,
display of THD will only produce the 0 (zero) value when the THD calculation has been suppressed
due to a low signal level being detected. It should also be noted that spurious signals (for
example, switching spikes) may be included in the “RMS of the total waveform” and will be used in
the calculation of THD. The display of THD may be seen to fluctuate under these conditions.
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9 Glossary
Active energy
Accumulated energy (Watt hours).
CT
Current Transformer. Transforms a (usually) high current to a value
that can be monitored by the meter.
Firmware
Software installed on a permanent medium.
Johnson Controls
(JC) N2
A master - slave serial communication protocol with fixed
communication parameters.
Modbus™
A proprietary communications protocol used for control and monitoring.
Reactive energy
The energy (VArh) in the reactive component of the supply. The
current and voltage in the reactive component are mutually 90° out of
phase - capacitive or inductive – resulting in a supply power factor of
zero.
RS485
A serial communication system linking multiple addressed terminals.
SCADA
Supervisory Control And Data Acquisition system.
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10.Index
Crompton Instruments
10 Index
Address, 21, 31
Parity, 19, 31
Auxiliary supply, 31, 35
Password, 13
Baud rate, 18, 31
Phase sequence, 27
Certification, 32
Pulse duration, 25
Connection Diagrams, 37
Pulse output, 6, 8, 22, 31
Connections, 35
Pulse rate, 22, 24
CT, 5, 14
Pulse width, 22, 25, 31
CT earth, 36
Range maximum, 30
CT primary current, 5, 14
Relay output 1, 23
Current transformer, 5, 14, 36
Relay output 2, 23
Demand Integration Time, 15
Reset demand, 16
Displayed units, 26
Reset energy, 16
dIT, 15
RoHS, 32
Divisors, 24
RS485, 6, 31, 37
Earth connection, 36
RS485 address, 21
EMC, 32, 33
Safety, 33
Error, 30
Screen check, 7
Firmware version, 7, 29
SET indicator, 10
Fuses, 36
Size, 32, 34
Inputs, 30
Standards, 32
JC N2, 6, 17
Start Up Screens, 7
Johnson Controls, 6, 17
Stop bits, 20, 31
LCD check, 27
Supply selection, 14
Maintenance, 33
Temperature, 32, 33
Meter current, 14
Test, 7, 27
Modbus™, 6, 17, 31, 37
Units, 26
Multiplier, 26
Version, 29
Number entry, 10
Wiring, 35
Option modules, 31
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41
Crompton Instruments
While TE Connectivity (TE) has made every reasonable effort to ensure the accuracy of the information in this catalogue, TE does not guarantee that it is error-free, nor does TE make any
other representation, warranty or guarantee that the information is accurate, correct, reliable or current. TE reserves the right to make any adjustments to the information contained herein at
any time without notice. TE expressly disclaims all implied warranties regarding the information contained herein, including, but not limited to, any implied warranties of merchantability or
fitness for a particular purpose. The dimensions in this catalogue are for reference purposes only and are subject to change without notice. Specifications are subject to change without
notice. Consult TE for the latest dimensions and design specifications. TE Connectivity and TE connectivity (logo) are trademarks. CROMPTON is a trademark of Crompton Parkinson
Limited and is used under licence. Other trademarks are property of their respective owners.
TE Energy – innovative and economical solutions for the electrical power industry: cable accessories, connectors & fittings,
insulators & insulation, surge arresters, switching equipment, street lighting, power measurement and control.
Tyco Electronics UK Ltd
A TE Connectivity company
Freebournes Road, Witham
Essex CM8 3AH, UK
Tel: +44 (0) 1376 509509
Fax: +44 (0) 1376 509511
e-mail: [email protected]
www.crompton-instruments.com
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